Another component of the ‘‘unhealthy behaviour cluster’’: adiposity
Nutritional status is obviously linked to both dietary habits and physical activity. The metabolic syndrome and, more specifically, abdominal adiposity has been associated with lung function impairment [42]. Data regarding the relationship between body mass index and lung function decline are conflicting. These findings are interesting since abdominal adiposity is more specifically associated with systemic inflammation than global obesity. Altogether, it is tempting to hypothesise that a diet poor in antioxidants, low level of physical activity and abdominal adiposity are inter-related, and concur in accelerating lung function decline through inflammation-mediated mechanisms.